netdev - Re: [atl1-devel] atl2: don't mess up irq on suspend/resume (probably msi only)

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Date:	Tue, 18 Nov 2008 17:36:09 +0000
From:	Alan Jenkins <alan-jenkins@...fmail.co.uk>
To:	Jay Cliburn <jcliburn@...il.com>
CC:	csnook@...hat.com, atl1-devel@...ts.sourceforge.net,
	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org
Subject: Re: [atl1-devel] atl2: don't mess up irq on suspend/resume (probably
 msi only)

Alan Jenkins wrote:
> Jay Cliburn wrote:
>   
>> [adding netdev to cc list]
>>
>> On Mon, 17 Nov 2008 21:43:16 +0000
>> Alan Jenkins <alan-jenkins@...fmail.co.uk> wrote:
>>
>>
>>   
>>     
>>> Don't listen to me.  The problem went away because when I was testing
>>> my patch, I plugged the ethernet in and actually used it.  My patch
>>> doesn't seem to fix anything.
>>>
>>> So I now have the steps to reproduce this warning: remove the ethernet
>>> cable and suspend.
>>>
>>> Also, I was speaking rubbish because the warning isn't on the resume
>>> path.  It seems to be when network-manager re-opens the device on
>>> resume.
>>>
>>> I'll have another look for possible culprits.  Hints appreciated :).
>>>     
>>>       
>> Does this help?
>>   
>>     
>
> Ah! Yes, that fixes it, thanks.
>   

Just noticed another problem. If I suspend with the cable plugged in, I 
get a warning message about freeing the IRQ:

[ 331.023417] atl2 0000:03:00.0: restoring config space at offset 0x1 
(was 0x100006, writing 0x100406)
[ 331.023453] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 331.023462] atl2 0000:03:00.0: setting latency timer to 64
[ 331.043449] ath5k_pci 0000:01:00.0: restoring config space at offset 
0xf (was 0x100, writing 0x10a)
...
[ 332.681591] Restarting tasks ... done.
[ 333.617398] hpet1: lost 2 rtc interrupts
[ 334.016700] Trying to free already-free IRQ 17
[ 334.057257] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 334.082570] atl2 0000:03:00.0: irq 44 for MSI/MSI-X

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